Apr 26

Vw jetta wiring

I have a MKV Jetta tdi. I retrofitted a E46 projector and ballast/igniter that I bought 10 years ago. The issue I'm having is whenever I start the car the projectors shut off or get really dim and flash. I know the VW are cambus, I assume the E46 ballast are also cambus am I wrong do I need cambus wiring also or do I need to disable the day time running light, the mean light is the DRL... I have a harness in between the headlight wire and the ballast/igniter. Any help would be great.. Thanks